/Engine/Plugins/Runtime/RigVM/Source/RigVMEditor/Public/Widgets/SRigVMVariableMappingWidget.h
typedef TBaseDelegate_TwoParams< void, const [FName](API\Runtime\Core\UObject\FName) &, const [FName](API\Runtime\Core\UObject\FName) & > FOnRigVMVariableMappingChanged